The annual “Green Your School” challenge kicked off last week, and runs through April 22nd. The challenge asks kids to find ways to implement green initiatives in their schools, such as improving recycling plans, using energy-efficient light bulbs in classes, and starting a school composting program.

Schools need at least 10 participating students to be eligible. Once the projects are complete (again, the deadline is April 22), students then report back to DoSomething’s panel of celebrity judges, who will determine the winners. Prizes include scholarships and grants, so it’s win-win. Schools get greener (and can win eco-funding), and students get financial support. The winning school also has a shot at being honored at the White House.

In her humorous video for the challenge, Munn explains that she’s a lover of all people, and that she doesn’t judge. But if she did judge, she’d probably judge people who leave lights on, and faucets running, and drive hummers, and all those people destroying the Earth. She also explains the prizes, and signs off with a wink.